Roof mechanism
From Tardis Wiki, the free Doctor Who reference
Torchwood Tower included a loading bay with a roof mechanism. (PROSE: The Time Traveller's Almanac [+]Loading...["The Time Traveller's Almanac (reference book)"]) In the Battle of Canary Wharf, the Cult of Skaro fought their way into the loading bay and, once in position, Dalek Sec overrode the roof mechanism, allowing the four Daleks to elevate into the sky along with the Genesis Ark, which was then opened above London. (TV: Doomsday [+]Loading...["Doomsday (TV story)"])
